With the warm weather set to continue, the ESB is reminding people not to swim in reservoirs during the warm weather, due to a risk of uneven ground and deep waters.
These include Poulaphoca in Wicklow and Leixlip in Kildare.
Meanwhille France has been put under its highest-level danger alert as a heatwave brings life-threatening conditions.
Forecasters predict temperatures of up to 45 Celsius in some parts.
Germany, Poland and the Czech Republic have all recorded their highest-ever June temperatures, and in Spain firefighters are battling Catalonia's worst wildfires in 20 years.
Wicklow Stay-at-Home Parents Now Worth Over €60,000 a Year
Green Ocean Oyster Re-Introduction Project Expands to Greystones Marina
Weekend Cold Snap To Provide Brisk Shake Up To Interminable Rainy Monotony
Greystones Fishermen Still Struggling Despite Harbour Settlement Warns Senator
Kilkenny Hurling Legend Helps Wicklow GAA Expand Profile With Fans App